Double-seaming machine



March 27, 1928.

F. HUNTAR DOUBLE SEAMING MACHINE Filed Aug. 11, 1924 2 Sheets-Sheet 1 II. Er

' 7 IN VE N T OR.

My m B y A 770RNE Y March 27, 1928.

F.1HUNTAR DOUBLE SEAMING MACHINE Filed Auz. 11} 1924 Winn 2 Sheets-Sheet 2 I INYVEZ TIOR.

BY ,awn

ATTORNEY Patented Mar. 27, 1928.

UNITED STATES 1,663,842 PATENT OFFICE.

FELIX HUNTAR, OF HILLSIDE, NEW JERSEY, ASSIGNOR TO AMERICAN CAN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

DOUBLE-SEAMING MACHINE.

Application filed August 11, 1824. Serial No. 731,251.

This invention relates in general to hand operated double seaming machines for seaming flanged can bodies to flanged and curled can ends with the usual double seam, and has for its object broadly insuring the uniform production of satisfactory seams independently of effort by an attendant to increase the output. from the hand machine beyond its capacity.

These machines are usually operated by attendants who are frequently paid upon a piece-work basis and since the seaming rolls are moved into and out of action by the attendant strong temptation is provided to shorten the periods of roll engagement in order that more cans per hour or per day may be seamed with resultant greater income to the operator.

My invention contemplates in this regard the provision of a hand control for the seamingroll movement, which when operated at the fastest practical speed will provide a minimum period of roll action suflicient to the production of perfect operations of the rolls and for the formation of a perfect seam from the combined action of the first and second operation rolls. The hand control is so constructed and arranged as to be incapable of operation at a speed that will produce an insufficient period of engagement of each roll with the seam being formed.

Another important object of the invention is the provision of automatic means for arranging the machine or apparatus in position to receive the next can for seaming immediately upon the completion of each seam ing action. 7

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

' Referring to the drawings Figure l'is a perspective View of a machine embodying my present invention;

Fig. 2 is an enlarged partial top plan view thereof; 7

Fig. 3 is a detail view showing a part of the mechanism for returning the can support to receiving position upon completion of a seaming operation; and

Fig. 4 is a partial sectional view showing a step in the formation of the seam.

Referring first to Fig. 4, reference character 11 indicates the can body and reference character 12 the can end. The double seam is formed by bending down a body flange 13 into and with a curled can end flange 14. The seam is formed by first and second operation rolls, the first operation rollbending down together the can body and can end flanges, and the second operation finishing the seam by compressing these flanges against the wall of the body 11 and the shoulder 15 of the can end.

The machine shown on the drawing and embodying my present invention comprises a frame or upright 21 which supports the operative parts. A can support or lift'22 is rotatably carried upon the upper end of a bar or rod 23, which is slidable in bearings 24 of the frame or upright 21. A collar 25 is mounted upon the rod 23 and an arm 26'pivotally secured to this collar at 27. The arm 26 rests upon an oscillating cam plate 28 pivoted in the frame 21 at 29; The cam plate 28 is connected by a link 31 with a treadle 32 so that when the treadle is depressed by the foot of the attendantthe cam plate 28 is swung in a counter-clockwise direction, viewing Fig. 1, lifting the arm 26. An arm 33 is fixed on therod 23 above the arm 26 so that rotation of the cam plate 28 slides the rod upwardly through the bearings 24 and lifts a can 11 placed thereon. An adjusting device 34 is provided in the arm 33 to regulate the lift of the can and cause accurate engagement by the can with the can rotating chuck 35 when the support reaches its upper position. v

The chuck 35 is carried upon the lower end of a shaft 36 mounted in bearings 37 in the upper part of the frame or upright 21 and this shaft is driven by bevel pinions 38 and 39 respectively upon the shaft 36 and a power shaft 41. The power shaft is provided with a pulley 42 driven by a belt 43 in the usual manner;

A seaming head 44 is fixed upon a shaft 45 carried in a bearing housing 46 in the frame. The seaming head has two first operation rolls 4'? and two second operation rolls 48 alternately arranged and a first and second operation roll together constitute a set of seaming rolls in said head.

The shaft 45 is provided with aworm wheel 49 on its upper endand this worm wheel is engaged by a worm 51 upon a shaft 52 arranged horizontally. Theshaft 52 is adapted for manual operation by a crank 53 having a handle 54 upon its end. The worm and worm gear in the present instance insure a sufliciently slow movement of the seaming rolls into, past and out of seaming position at the maximum speed of crank action of the handle 54, that is to say, the ratio of the gearing is such that one complete revolution of the worm gear 49 and with it of the seaming head as requires a number of complete revolutions of the worm 51 and with it of the crank handle 54, and the operator cannot rotatethe crank 53, 54 fast enough to prevent a complete and satisfactory seaming operation.

It will be understood that when the can is raised against the chuck 35 with the end upon it the end and can body rotate at high speed and that rapid manipulation then of the handle 54 to rotate the shaft 52 moves a first operation roll slowly to and past seaming position and then and immediately following this the second operation roll is presented in like manner. The worm gearing is such that each roll has a minimum time of engagement with the seam being formed at the fastest turning speed an attendant can give the worm. A stationary table 61 is provided at the lower position of the can support 22 and in registration therewith when the can support is lowered. This table is carried upon the end of a rod 62 fixed in bearings 24': and both the table and the can support can be raised or lowered to accommodate cans of different height. The final adjustment is attained by adjusting device 84 already described.

Means are provided for quickly and automatically lowering the can and can support upon the completion of the seam. It will be noted from Fig. 1 that the shafts 63 of the second operation rolls are higher than the shafts er of the first operation'rolls and the shafts 63 actuate a lowering device after the second operation roll has left the can upon the completion of the second operation. A bar 65 is slidably mounted upon screw pins 66 (Fig. '3 on the side of the frame and this slide has a nose 67 which is engaged by the upwardly extending end of the shaft 63 .after the second operation seaming roll leaves seaming position.

The bar 65 hasa lug 68 engaging a bell crank 69 pivoted on the frame at 71 and-this bell crank is connected by a link 7 2 with the cam plate 28 in such manner as to lower the cam plate and consequently the lift 22 upon downward movement of the link. I

It will be noted'that the seaming head in carrying two sets of rolls requires'only a partial rotation for each complete seaming operation and that the handle 54. must be rotated a number of times to present a set of two rolls to a can seam. A complete rotation of said seaming head, therefore, results in the complete double seaming of two cans.

The operation of the apparatus shown on the drawing as embodying my present invei'itionmay be briefly described as follows: The can 11 is slid over onto the lift or support and the foot pedal 32 then depressed by the operator. This causes a lifting of the can support 22, link 31, cam plate 28, movable arm 26 and fixed arm Upon lifting the can engages the continuously rotating can chuck 35 whereupon immediate high rotation is imparted to the can and support. Thereafter the attendant turns the crank 53 thereby rotating theseaming head to move the first operation roll into engagement with the can and end flanges to perform the first seaming operation. The I attendant continues to rotate the crank moving the first operation'roll on past its seaming position and then bringing the second operation roll into action (Fig. 4). Continued turning of the crank carries the second operation roll past the seaming position and causes a longer upwardly extending roll shaft .63 to engage and push'back the nose 67 of "the slide 65, which through manipulation of the bell crank 69 and link 72 oscillates the cam plate lack to an inoperative position lowering the can lift and raising the treadle32.

it is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof. V

I claim: I

1. In an apparatus for double seaming can ends to can bodies, the combination of, clamping devices for clamping a can body and end applied thereto, means for rotating said clamped body and end, first and second operation seaming rolls, and. a manually operable worm gear device for slowly moving said first and second operation seamingrolls successively into seaming position,said manually operable device being connected'to said seaming rolls andinsuring sufiicient duration of operation of each roll at the maximum speed at which said device may be manually operated. i

2. In an apparatus for double seaming can ends to can bodies, the combination of, first and second operation seaming rolls, means for-presenting a can body and canend in position IOI engagement by said rolls. anda manually operable device rotary for complete circle for presenting said rolls successively to seaming position, said manually operable device imparting a minimum period of individual rolloperation suflicient to of said roll on the can seam.

' 3. In an apparatus for double seaming can ends to can bodies, the combination of, first and second operation seaming rolls, a seaming head rotary for a full circle and carry ing said rolls, means for presenting a can body and can end in position for engagement by said rolls, a manually operable device for moving said rolls successively into seaming position, said device operating at sufliciently greater speed than the movement of said seaming head around the can to insure aminimum period of roll engagement at maximum speed of said device to effect a complete seaming operation.

4:. In an apparatus for double seaming can ends to can bodies, the combination of, means for clamping and rotating a can and can end for seaming, a seaming head rotary for a full circle and carrying first and sec ond operation rolls, and a manually manipulative device for moving said seaming head to present said rolls successively into seaming position, said device being adapted for moving said head at a maximum speed resulting in minimum period of engagement with the can seam being formed suflicient to insure the completion of the action of each roll.

5. In an apparatus for double seaming can ends to can bodies, the combination of, a seaming roll, means for presenting a can in position to be operated on by said roll, and a manually operable worm gear device for slowly moving said roll into and out of engagement with the can seam being formed, said manually operable device having maxi mum speed insuring a minimum period of engagement between said roll and said seam sufficient to insure complete action of said roll on said seam.

6. In an apparatus for double seaming can ends to can bodies, the combination of, rotating can chucks presenting a can and cover in position for seaming, a seaming roll head rotary for a full circle and carrying first and second operation seaming rolls and adapted upon rotation to present said rolls into seaming position, manually operable means for rotating said head, said means having a movement greater than the move-. ment ofsaid head by an amount sufficient to insure a minimum period of engagement suflicient to insure full operation of said roll on the seam being formed.

7. In an apparatus for double seaming can ends to can bodies, the combination of, a

rotating chucks 'for clamping and'rotating a can body and can end in position for seaming, a rotatable seaming head rotary for a full circle, first and second operation rolls in said'head and adapted to accomplish a complete seaming actionkat a partial rotation of the head, and a manually operable device for rotating said head, said device requiring a greater rotation for a complete seaming operation than is required by said head. Y

8. In an apparatus for double seaming can ends to can bodies, the combination of, rotating chucks for clamping and rotating a can body and a can end in position for seaming, a rotatable seaming head rotary for a full circle, first and second operation rolls in said head and adapted to accomplish a complete seaming action at a partial rotation of the head, and a manually operable device for rotating said head, said devic e requiring a plurality of rotations for a partial rotation of said head.

9. In an apparatus for double seaming can ends to can bodies, the combination of, can clamping and rotating chucks for presenting a can body and end in position for seaming, a rotatable seaming head rotary for a full circle and carrying first and second operation seaming rolls, and a rotatable manually operable handle for rotating said head to bring said seaming rolls into operative position, said handle having rotative movement in excess of the rotative movement of the head.

10. In an apparatus for double seamin can ends to can bodies, the combination 0 can clamping and rotating chucks adapted to present a can body and can end into position for seaming, a rotatable seaminghead rotary for a full circle and carrying a plurality of sets of first and second operation seaming rolls and adapted upon a partial rotation to present a set of seaming rolls successively into seaming position, and a fianiually operable device for rotating said 11. In an apparatus for double seaming can ends to can bodies, the combination of, can clamping and rotating chucks adapted to present a can body and can end into position for seaming, a rotatable seaming head rotary for a full circle and carrying a plurality of sets of first and second operation seaming rolls and adapted upon a partial rotation to present a set of seaming rolls successively into seaming position, and a manually operable handle for rotating said head, said handle moving at greater speed than said head in imparting said rotation to said head.

12. In an apparatus for double seaming can ends to can bodies, the combination of, can clamping and rotating chucks for presenting a can and can end into position for seaming, first and second operation seaming rolls adapted to be moved successively into operative position, a manually operable device for moving said rolls into and out of 7 after the completion of the seaming operation for separating said chucks.

13. In an apparatus for double seaming can ends to can bodies, the combination of, a vertically movable can support, a rotating can chuck adapted to engage a can end upon a can carried by said support when the same if lifted thereagainst, a rotatable seaming head carrying first and second operation seaming rolls, a manually operable device for rotating said head to present said rolls successively int-o seaming position, a device fo w ing sa d a uppe tend' m an carried by'the. head. for autor natically.v op,- erating said lowering device upon the. com} pletion of a seaming operation. I a I 14. In an apparatus for: double seainin ean'ends to. can bodies, the combination 0 an pport, a ro i g h k, imn l y controlled seaming rolls, means under control ofan operator for lifting saidcan sup- Po nd au ma mean t r w r ng aid can support upon the completion of a seaming operation.

FEL X HUN AB- 

